I see this suggestion all the time, but like, let me lay it out. If you have the profit margin to support giving a significant promo discount AND paying an influencer for every sale that uses the promo code, you have the volume, scale and money to just give influencers free shit. It's probably cheaper! Or you'd have a dedicated contract with the influencer. If you aren't using a promo code (ie, people are not getting a significant discount), then people won't bother attributing their sales to the influencer. It's not a quick fix for the influencer problem.